Attachment for fourdrinier machines.



'PATENTED JAN. 13 J. E. WEBB & G. M.,PILLSBUR Y. ATTACHMENT FOR POURDRINIER MACHINES.

APPLICATION FILED AUG. 11, 1902.

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No. 718,406. PATENTED JAN. 13, 1903. J. E. WEBB & G. M. PILLSBURY.

ATTACHMENT FOR- FOURDRINIER MACHINES.

- APPLICATION FILED AUG. 11, 1902. I I0 1101121.. 3 SHEEN-SHEET 2;

. v 3 A N W W PATENTED JAN; 1a, 1903. J. E. WEBB & G. M. PILLSBURY. ATTACHMENT FOR FOURDRINIER MAGHINES.

APPLICATION FILED AUG. 11, 1902. v H0 MODEL. 3 BEEBTS -S HBT 3.

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UNiiED STATES ATENT OFFICE.

JOHN EDWARD WEBB AND GEORGE MELVILLE PILLSBURY, OF RUMFORD FALLS, MAINE.

ATTACHMENT FOR FOURDRINIER MACHINES.

SPECIFICATION forming part of- Letters Patent N 0. 718,406, dated January 13 1903.

Applicatio'n'filed August 11,

To all whom it may concern; I

Be it known that we, JOHNEDWARD W BB and GEORGE MELVILLE PILLSBURY, citizens of the United States, residing at .Rumford Falls, in the county of Oxfordand State of Maine, have invented a new and useful At-- tachment for Fourdrinier Machines, of which the following is a specification.

This invention relates to paper-making machines of the Fourdrinier type.

The object of the invention is in a ready, expeditious, thoroughly feasible, and practical manner to conserve materials that have heretofore been wasted in making paper and to reuse them.

With these and other objects in view, as will appear as the nature of the invention is better understood, the same consists in the novel construction and combination of parts of an attachment for Fourdrinier machines, as will be hereinafter fully described and claimed.

In the accompanying drawings, forming a part of this specification, and in which like numerals of reference indicate corresponding parts,-there is illustrated one form of embodiment of the invention capable of carrying the same into practical operation, it being understood that the elements therein exhibited may be varied or changed as to shape, proportion, and exact manner of assemblage Without departing from the spirit thereof, and in the drawings Figure 1 is a view in. side elevation of so much of a paper-making machine as is necessary to render clear an understanding of the Fig. 2 is a viewin verti-' present invention. cal longitudinal section through the save-all and the Wire or screen. Fig. 3 is a view in top plan of the save-all. Fig. 4 is aview in transverse section, taken on the line 4 4, Fig. 2. Fig. 5 is an enlarged detail view in section of the pulp-saver, which constitutes one of the essential features of the present invention.

connection between the pulp-saver" and the suction-pump and suction-boxes.

Referring to the drawings, 1 designates the save-all, of the usual or any preferred construction and located beneath the wire or screen 2; 3, afan-pump box; 4, a trough com- Fig. 6 is a view in plan, showing the- 1902. Serial No. 119,854. (No model.)

' tents may be discharged thereinto by gravity.

The water from the suction-boxes 7, which contains a large quantity of filler-such as clay, agalite, coloringmatter, fiber, and sizing materials or any other substance contained in the paper-is discharged through pipes 7 to the suction-pump 7 thence into the pulpsaver 6 through a pipe 8, there being a trough 9 provided at the top of the pulpsaver and having a foraminous or reticulated bottom, the function of which is to break the fall of the water, and thus to prevent it from stirring up the pulp, &c., at the bottom of the saver. This Water and pulp is discharged from the saver through a valve-controlled pipe 10 into the fan-pump box 3,where it is mixed with the thick stock therein, and thus thins or dilutes it to the proper consistency before it passes to the screen and returns to the paper materials removed therefrom by the suctionboxes. The pulp-saver is herein shown as an inverted tru ncaredcone shaped structure; but, if preferred, it may be. hopper-shaped and still be within the scope of the invention. The upper portion of the pulp-saver has associated with it an overflow-pipe 11, and at its bottom portion is a waste-pipe l2, connecting with a sewer or other outlet and provided with a valve 13, which operates normally to close exit through the pipe.

To obviate the employment of fresh water to keep down foam, the white water from the nect the upper ends of sections of hose 17,

the lower ends of which are connected with valved branch pipes 18, carried by a feedpipe 19, with which is coupled a supply-pipe 20, connecting with the lower portion of the casing of a fan-pump 20, with the upper portion of which latter connects a branch pipe 21, leading to the trough 4:. In addition to the supply-pipes just described there is a similar pipe 22, disposed back of the slashboard 23, which pipe connects by a section of hose 2a with a valved pipe 25 on the feedpipe 19, the last-named spray-pipe operating to prevent foaming and also to assist in the removal of any pulp and the like that may adhere to the bottom of the save-all, which bottom, as shown in Fig. 4, is transversely and lo'ngitudinallyinclined in order to insure that pulp and the like will all be directed to the pipe 5. The fan-pump 20 is provided for the purpose of drawing the white water out of the trough 4 and returning it to the save-all through the pipes 20 19 and hosesections 17. The trough is provided with a partition 26, which operates to prevent escape of but a small portion of the water from the save-all into the fan-pump box. Under the arrangement described there will be acontinuous circulation of white water, that from the spray-pipes 15, as before pointed out, operating to remove the pulp, &c., from the save-all, and that from the spray-pipe 22 opcrating, in addition to the above function to prevent foaming.

It will be seen from the foregoing description that practically all of the pulp, coloringmatter, &c., from the save-all is conserved and remixed with the thick stock in the stu ifbox, While the white water that is usually Wasted is advantageously employed for the purposes above defined.

While the arrangement of parts herein shown will be thoroughly effective in operation for the purpose designed, it is to be understood that in carrying the invention into practical operation changes in the arrangement and proportion of parts may be resorted to Without departing from the scope or sacrificing any of the advantages of the invention.

Having thus fully described our invention, what we claim as new, and desire to secure by Letters Patent, is

1. In a paper-making machine, the combination with the save-all of spraying mechanism.

2. In a paper-making machine, the combination with the save-all, of spraying mechanism and water-circulating means associated therewith.

3. In a paper-making machine, the combination with the save-all, of spraying mechanism, a fan-pump box connected with the save-all, and means for Withdrawing a portion of the white water before it reaches the fan-pump box and forcing it back to the said spraying mechanism.

4. In a paper-making machine, the combination with a save-all, of spraying mechanism, a fan-pump box, a trough communieating therewith and provided with a partition, a pipe connecting the save-all and the trough, a pulp-saver in communication with the fan-pump box, and aconnection between the pulp-saver and the suction-boxes.

5. In a paper-making machine, the combination with the save-all, of spraying mechanism, a fan-pump box, a trough communieating with the fan-pump box, a pipe connecting the trough and the save-all, a pulpsaver in communication with the fan-pump box, a connection between the pulp-saver and the suction-box, and a pipe including a fanpump connecting the trough and the spraying mechanism.

In testimony that we claim the foregoing as our own we have hereto affixed our signatures in the presence of two witnesses.

JOHN EDWARD WEBB. GEORGE MELVILLE PILLSBURY.

Witnesses:

JULIA A. JONES, ARTHUR M. KNIGHT. 

